A good choice for commuters and urban riders who want keyless security for short stops and easy, frame-friendly storage while riding.
The ULAC ST Fighter Combo Chain Moss is a compact chain lock for everyday urban riding, commuting and quick stops. Its 5 mm heat-treated hardened steel chain is designed to resist cutting and tensile forces, while the resettable combination mechanism gives you keyless convenience with up to 10,000 unique combinations.
At 100 cm long, the chain provides practical reach for securing your bicycle to a fixed urban structure. The high-quality nylon sleeve helps prevent scratches to your frame, and the included ULAC Velcro strap lets you wrap the lock neatly around your top tube or seat post while riding. At 540 g, it offers a useful balance of portability and everyday security for lower-risk stops.
Heat-treated hardened steel chain
The 5 mm steel chain is built to provide resistance against cutting and tensile forces during everyday urban use.
Keyless combination mechanism
Set and reset your own combination, so there is no physical key to carry or lose.
Up to 10,000 combinations
The combination mechanism offers a wide range of possible codes for straightforward personal security.
100 cm chain length
The generous length makes it practical to secure your bike to a range of fixed urban structures.
Protective nylon sleeve
The soft sleeve helps guard your bicycle’s paintwork from scratches while also making the chain more comfortable to handle.
Easy on-bike storage
Use the included ULAC Velcro strap to wrap the lock around your top tube or seat post while riding.
Moss green finish
The Moss colour adds a subtle, earthy look while keeping the lock easy to identify in your riding kit.
ULAC Level 5 security rating
A useful security option for everyday urban stops where portability and convenience matter.
General
Materials & construction
Dimensions & weight
Compatibility
Features
What's included
A bike lock is not just a bike lock.
ULAC is a Taiwanese bicycle-lock brand established in 1982. It began as an original equipment manufacturer producing high-security solutions for global industry leaders, then transitioned to an independent, consumer-focused brand in 2015 with the Si Works silicone lock collection.
ULAC develops security products through its in-house U-Lab research and development centre and operates its own manufacturing facility. Its work includes integrated alarm systems, NFC smart-lock technology and biometric authentication, alongside conventional bicycle-lock hardware and design-led products.
